Adds identity v2 tests to show extra behavior

The v2 API uses name instead of username for the user entity.  This will
change soon to match the spec.  Theses tests will ensure the existing
behavior isn't broken.

Change-Id: Ic6830976f246f707c8b7ef8e92a1697d19fdfe67
Related-Bug: #1214686
Merge "Adds identity v2 tests to show extra behavior"